Control method of single lens reflex camera having preview funct

Details Control method of single lens reflex camera having preview funct Control method of single lens reflex camera having preview funct

1997-11-18

1999-01-26

Gray, David M.

Photography

Single lens reflex camera

With mirror support or drive

396461, 396509, G03B 1724

Patent

active

058647252

ABSTRACT:
A method for controlling a single lens reflex camera having a preview function is provided in which a mirror drive mechanism, a diaphragm drive mechanism, and a shutter are driven in association with the rotation of a single-revolution cam gear which is driven by a motor. When the release switch is turned ON, the single-revolution cam gear is rotated by a single revolution in the forward direction, and when an external preview switch is turned ON, the preview operation is carried out by the reverse rotation of the single-revolution cam gear within a predetermined angle range in which the stop-down operation takes place without causing an upward movement of the mirror. When the release switch is turned ON during the preview operation, the motor is rotated in the forward direction until the single revolution cam gear is returned to the initial position, so that the photometering operation is carried out at the full-open aperture position.

REFERENCES:
patent: 4792730 (1988-12-01), Ootsuka et al.
patent: 4792823 (1988-12-01), Fujino et al.
patent: 4835558 (1989-05-01), Araki et al.
patent: 5257052 (1993-10-01), Kurosaki et al.
A Search Report issued with UK App. No. GB 9724169.9.
A Search Report issued with UK App. No. GB 9724172.3.
Copy of a United Kingdom Search Report issued with UK App. No. 9724171.5.

Affiliated with

Also associated with

Rating

Control method of single lens reflex camera having preview funct does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Control method of single lens reflex camera having preview funct, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control method of single lens reflex camera having preview funct will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1457532